Be in control of your sunrise and sunset photography with the high-quality 100x150mm Reverse-Graduated Nd 0.9 Filter (3 Stops). This durable and effective filter is specifically designed by Lee Filters, a reputable brand in the photography industry, to give photographers full control over their images shot at the beginning and end of the day. This versatile filter is at its densest on the horizon line, providing a gradual transition zone that effectively reduces the amount of light entering your camera lens by 3 stops. This allows for a wider aperture or slower shutter speed to be used in bright conditions, resulting in a brighter image and a shallower depth of field. The Reverse Nd filter features a stronger density in the center, with a carefully designed transition zone that provides a natural, balanced exposure to the sky. This unique design allows for precise control of the exposure at the horizon line, where a sunrise or sunset is at its brightest. This makes it particularly ideal for capturing stunning seascapes. Unlike many similar filters that feature a strong 'stripe' at the horizon line that fades very sharply, the Lee Reverse Nd filter offers a much smoother, more gradual transition between the dyed and clear areas of the filter. This results in a pleasing and balanced image that enhances the overall quality of your photography. Designed to be most effective when used on lenses of 24mm or wider on a full frame Dslr (or equivalent), this easy-to-use filter can be positioned in the holder so that the most dense area is on the horizon line where the sun is brightest. The gradual Nd transition zone will control the exposure, preventing the sun and sky from burning out, while the clear area will maintain a reasonable exposure for foreground and middle ground interest. Hand-manufactured by skilled technicians at Lee Filters' Andover factory, this filter ensures a level of precision and quality control that's unique in the industry. Elevate your landscape and architectural photography with the 100x150mm Reverse-Graduated Nd 0.9 Filter (3 Stops)..